birefringence

名词 birefringence:

1. splitting a ray into two parallel rays polarized perpendicularly
   同义词：double refraction

bi.re.frin.gence

n.（名词）
The resolution or splitting of a light wave into two unequally reflected waves by an optically anisotropic medium such as calcite or quartz.Also called double refraction
双折射：视觉上各向异性的中介（如方解石或石英）的作用而使光波转变或分裂为两不等反射波也作 double refraction

【引伸】
bi.refrin.gent
adj.（形容词）